2 * A saved SBCL system is a .core file; the code here helps us accept
3 * such a file as input.
7 * This software is part of the SBCL system. See the README file for
10 * This software is derived from the CMU CL system, which was
11 * written at Carnegie Mellon University and released into the
12 * public domain. The software is in the public domain and is
13 * provided with absolutely no warranty. See the COPYING and CREDITS
14 * files for more information.
22 #include <sys/types.h>
36 static void process_directory(int fd, long *ptr, int count)
38 struct ndir_entry *entry;
40 FSHOW((stderr, "process_directory(..), count=%d\n", count));
42 for (entry = (struct ndir_entry *) ptr; --count>= 0; ++entry) {
44 long id = entry->identifier;
45 long offset = CORE_PAGESIZE * (1 + entry->data_page);
46 os_vm_address_t addr =
47 (os_vm_address_t) (CORE_PAGESIZE * entry->address);
48 lispobj *free_pointer = (lispobj *) addr + entry->nwords;
49 long len = CORE_PAGESIZE * entry->page_count;
52 os_vm_address_t real_addr;
53 FSHOW((stderr, "mapping %ld bytes at 0x%lx\n", len, addr));
54 real_addr = os_map(fd, offset, addr, len);
55 if (real_addr != addr) {
56 lose("file mapped in wrong place! "
57 "(0x%08x != 0x%08lx)",
63 FSHOW((stderr, "space id = %d, free pointer = 0x%08x\n",
67 case DYNAMIC_SPACE_ID:
68 if (addr != (os_vm_address_t)dynamic_0_space
69 && addr != (os_vm_address_t)dynamic_1_space) {
70 lose("bizarre dynamic space!");
72 current_dynamic_space = (lispobj *)addr;
73 #if defined(ibmrt) || defined(__i386__)
74 SetSymbolValue(ALLOCATION_POINTER, (lispobj)free_pointer);
76 current_dynamic_space_free_pointer = free_pointer;
80 static_space = (lispobj *) addr;
82 case READ_ONLY_SPACE_ID:
83 /* We don't care about read-only space. */
86 lose("unknown space ID %ld", id);
91 lispobj load_core_file(char *file)
93 int fd = open(file, O_RDONLY), count;
95 /* KLUDGE: This kind of conditionalization everywhere that 32-bit
96 * ints are used is really nasty. It would be much nicer to define
97 * a typedef a la addr_as_int once and for all in each
98 * architecture file, then use that everywhere. -- WHN 19990904 */
100 long header[CORE_PAGESIZE / sizeof(long)], val, len, *ptr;
103 u32 header[CORE_PAGESIZE / sizeof(u32)], val, len, *ptr;
107 lispobj initial_function = NIL;
110 fprintf(stderr, "could not open file \"%s\"\n", file);
115 count = read(fd, header, CORE_PAGESIZE);
116 if (count < CORE_PAGESIZE) {
117 lose("premature end of core file");
123 if (val != CORE_MAGIC) {
124 lose("invalid magic number in core: 0x%lx should have been 0x%x.",
129 while (val != CORE_END) {
132 remaining_len = len - 2; /* (-2 to cancel the two ++ operations) */
140 if (*ptr != SBCL_CORE_VERSION_INTEGER) {
141 lose("core file version (%d) != runtime library version (%d)",
143 SBCL_CORE_VERSION_INTEGER);
147 case CORE_NDIRECTORY:
148 process_directory(fd,
151 remaining_len / (sizeof(struct ndir_entry) /
154 remaining_len / (sizeof(struct ndir_entry) /
160 case CORE_INITIAL_FUNCTION:
161 initial_function = (lispobj)*ptr;
165 lose("unknown core file entry: %ld", val);
168 ptr += remaining_len;
171 return initial_function;